Molding device.



VNO. 822,039. PATBNTED MAY 29, 1900.

H. BESSER.

MOLDING DEVICE.

APPLIO'ATION FILED 11110.13, 1905 2 SHEETS-SHEET 1.

A TTOH/VEYS PATENTED MAY 29, 1906.

H. BESSER.

MOLDING DEVICE.

APPLICATION FILED DEo.13,19o5

2 SHEETS-SHEBT 2.

A TTOHNE Y /NVENTOH jfefmm leer W/T/VESSES.'

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j1 iwf-nerr, i orrron.

* HERMA-n BESSER;` or ALP-Erni, MIQHIGALN..

MOLDINGDEVSIGE. Y

Speccation-of- Letters'.Eatentv Patented-May 29, 1906.

Application filedV December 13,1905. Serial Nb. 291,560.

.To all whom it may concern.-

Be it known that I, HERMAN BESSER, a citizen of the United States, and aresident of Alpena, in the county of Alpena and'State of Michigan, haveinvented a new andflmproved' Molding Device, of which the following is afull, clear, and exact description.

My invention relatesto a device for carrying out what is ordinarilyknown as the hand method of molding building-blocks and other articlesfrom plastic material. this methodthe mold, which constitutes most ofthe device, is manipulatedby hand to form a molded article g and theprincipal objects of another, which is really a part of the featurevmentioned above, means for limiting the motion of the mold-wallsoutwardly and holding them in such position that the mold can be liftedwithout danger of the wallsv swinging inwardly against the plasticarticle, means for positively guiding the mold-walls both inwardly andoutwardly and locking them when the mold is placed in position formolding on a pallet or the like, so that another mold will be inposition for receiving the plastic material, means for supporting ahopper to guide the material into the mold, means for convenientlysetting cores, and means for accomplishingthe same results whetheranordinary four-part mold is employed or a mold of any other number ofparts-as, for example, one comprising two parts, in which the end wallsand partitions extend inwardly toward the center of the mold.

Further features of the invention will appear below.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a plan of a molding device, showing the principle of myinvention. Fig, 2 is a sectional view of the same on the line 2 2 ofFig. 1, the mold appearing mainly in elevation. Fig. 3 is an endelevation of the same. Fig. LLis a sectionalview on the line 4 i` ofFig. 2. 'i Fi 5is a-view similar to Fig. 2

showing the mo d open andready for lifting. Fig. 6 is aside elevation,partly in section, showinghow the invention is applied'to a differentform of'mold and also showing the pro- For convenience l haveillustrated the invention as applied to a four-wallmold, and I'shallrefer to'. two of the walls as sides" and two as ends, althoughitwill be understood vision. for supporting a core; and Fig. 7 is a bottomplan view of the portion of the device `shown inFig. 6.

that the parts mounted on the sides could be placed on the ends or partof them on each without departing from the spirit of the invention.

I have shown aframe comprising uprights. I

10 at the corners of the mold, these uprights being provided withhorizontal' flanges 11', which are provided with eyebolts 12.Throughthese eyebolts pass hollow or solid rods 13 at the ends of thedevice. @n these rods are mounted blocks 15 ,each block bein g providedwith a perforation to receive they rod 13 and with another perforationfor receiving a side rod 16. It will be obvious that the four rods 13and 16 in the present form of' mold constitute arectangle, whichfcan beadjusted in size by moving the rods with respect to the blocks 15; isreached, the parts are secured in position by set-screws or the like 17.The parts so far described constitute the main portion of the frame forsupporting a mold.

On the side and end rods are pivotally mounted hinge pieces 18. Thesehingepieces are connected with sides 19 and ends 20 either by being castintegral therewith or by being adj ustably mounted through theinstrumentality of'bolts and slots. In order to keep the sides and endsordoors from shifting along the rods and allowing the mold to get out ofsquare, I provide set-collars 18a, held against the hinge-pieces byset-screws. The Walls 19 and 20 constitute the mold proper, and, as willbe observed, they are swung on the rods 13 and 16, sovthat they can moveoutwardlyfrom each other, so as to free the molded object from the mold.

In order to provide for moving the walls outwardly, on two of them arelocated cleats 21, through which pass the ends` of handles 22. Thesehandles are formed of bar-iron or similar material and are of less widththan When the proper size IOO IIO

f the width of a passage 23 behind each cleat 21. and down in thesepassages, and their projecting ends 24 constitute latches. vOn the otherwalls-in this instance the side wallsare located plates 25, in which arenotches 26,. with which the latches are adapted to engage for lockingthe side and end walls in vertical position. The plates 25 projectinwardly at their ends, theirprojections 26 extending far enough to beengaged by the edges of the end walls when the latter are swungoutwardly on their pivots, thus transmitting motion from the end wallsto the side Walls.

At the ends of the projections 26 are sharp bends 27, with which thelower edges of the end walls engage at the limit of their motion. Thesebends revent the end walls from moving beyond t em, and consequentlylimit the motion of all the walls. As the walls are then heldin thisposition while an operator lifts upwardly on the handles 22, it will beobvious that the whole molding device can be raised without any dangerof any disarrangement of the parts.

When it is desired to close the mold, the

molding device is deposited upon a pallet and the handles 22 movedinwardly.` The projections 24 are provided with downwardlyextendingtongues 28, which enga e the outer surfaces of the plates 25, thusorcing the side walls to move inwardly with the end walls and affordinga positive connection for this purpose. When the walls are all vertical,the handles are moved downwardly and engage in the notches 26, so as tolock the parts in this position.. In order to provide for directing themolding material into the mold, I place plates 29 on the hinge-pieces18, four of these plates being shown in the present form of theinvention. It will be obvious that these plates being mounted on thehinge-pieces will move with them and that when the mold is closed acomplete hopper is provided.

The parts described above are generic to the invention and can be usedin the simplest form on molds having three or more walls; but for atwo-part mold in which the two mold-walls swing from a center line itwill be obvious that if they are pivoted in the manner shown in Fig. 2their projecting end walls, which are integral with the side walls, andalso any projecting partitions, such as are used for tile-molds andextend to the center line thereof, would upon swinging engage the palletand stop all motion until the mold was lifted. As it is desired toremove the mold-walls from the molded article before the liftingoperation commences, it is merelylnecessary to introduce a modificationinto t e hinge-pieces 18. In Fig. 6 I have shown how accomplish thisresult. Two walls 19a, which meet at the center of the mold andconstitute the entire outer portion Consequently the handles can move upof the mold, are provided withv hingepieces i 18a, which extend acrossthe mold and are mounted on the rods 16 in the same manner f as thehinge-pieces 18 of the other figures are mounted upon them. In this formof mold handles 22a may be employed and plates 25a,

corresponding to the plates 25; but as there are no separate end wallsthese pieces are secured to one of the side walls and are engaged by thelatch on the other.

' On account of the fact that this style of mold is most ordinarilyemployed for making tiles and similar hollow articles of a simple natureI have taken occasion to illustrate in the figures showing it the mannerin which I use ordinary cores on my molding device. The pallet isprovided with a slot 30 and on the under surface with a pair of cams30a. A core 31, which it is intended to place above the slot, isprovided with a rod 32, having a pin 33 on the end. This pin or key isadapted to pass through the slot 30, and then when the rod is turned bymeans of a handle 34 the pin will ride up the inclined surfaces 30a andlock the core in position. A collar 35 is provided on the rod forpreventing longitudinal motion of the rod beyond a certain oint.

The operation of the device wil be readily understood.l Su posing themold to be placed on apallet in ocked position, the parts will be readyfor the reception and tamping of the molding material. After the moldingoperation is completed in order to remove the mold from the moldedarticle the operator grasps the handles 22 and first lifts them in thepassages23 to disengage them from the notches 26 and then moves themoutwardly. This obviously swings the end walls outwardly. They come incontact with the projections 26 of the plates 25 and press the sidewalls apart until the end walls come in contact with the bends 27 at theextreme end of the side pieces. These bends hook into the lower edges ofthe end walls and hold them firmly, so that thewhole device can belifted from the nished roduct without disarranging the parts of t edevice. When the device is to be closed, the tongues on the latchesengage the outer edges or surfaces of the rojections 26 and force theminwardly, w en the handles are forced inwardly after the device is againset down on another pallet for molding. When the walls are vertical, thelatches are depressed and the parts are locked.

Having thus described my invention, I claim- 1. In a device of the classdescribed, an expansible mold comprising a substantially rectangularframe, side and end walls hinged to the frame, means connected with theend walls for moving the same, and means con- I nected with the sidewalls and engaging said I moving means whereby to move the side walls inunison with the end walls.

IOO

2. n a device of the character described, an expansible mold comprisinga substantially rectangular frame, side and end walls dependin from theframe, handles movably connecte with the end walls for swinging thesame, and means connected with the side walls and engaging said handleswhereby to move the side walls in unison with the end walls.

3. A molding device comprising movable mold-walls, a plate on one wall,and a movable latch on another wall for locking said plate, said platehaving a bend for engaging the edge of the other wall and limiting themotion of both walls.

. 4. A molding device comprising movable mold-walls, a plate on onewall, and a Inovable latchl on another wall for locking said plate, saidplate having a bend for engaging the edge of the other wall and limitingthe motion of both walls, said latch having a proj ection on the outsideof said plate for engaging the latter and forcing it inwardly.

5. A molding device comprising movable mold-walls, a plate on one wallhaving inwardly-projecting ends beyond the ends of said wall, a -movablelatch on another wall adapted to engage said plate and lock the twoadjacent walls together, the second wall being adapted to engage theprojection on said plate for forcing the first wall outwardly, and meanson the latch for engaging the outer edge of said plate.

6. A molding device comprising movable mold-walls, a plate on one wallhaving inwardly-projecting ends beyond the ends of said wall, a movablelatch on another wall adapted to engage said plate and lock the twoadjacent wal s together, the second wall being adapted to engage theprojection on said plate for forcing the first wall outwardly, means onthe latch for engaging the outer edge of said plate, and means forswingingly mounting said walls, said means comprising hinge-piecesextending from each wall across the mold to the opposite side thereof,the

outer ends of said hinge-pieces being pivotally mounted.

7. In a molding device, the combination of a frame comprising aplurality of adjustablymounted rods, hinge-pieces pivotally mounted oneach rod and extending across the device, mold-walls mounted on thehingepieces, means on the mold-walls for simultaneously andautomatically swinging each wall outwardly when the device is lifted,and l set-collars secured to the rods against the hingeieces.

8. Iii a molding device, the combination of a frame, bearings thereon, apair of rods mounted in parallel position in said bearings, blocksmounted adjustably on said rods, a second pair of rods adjustablymountedon said blocks and located at an angle to the first-named rods, aseries of hinge-pieces pivoted to each of said rods, mold-wallssuspended from said hinge-pieces, handles connected with sundry of saidmold-walls, and means whereby said handles may simultaneously swing allof said walls outwardly. j

9. In a molding device, the combination of aframe having bearings, apairof rods mounted thereon, a pair of blocks adjustably mounted on eachrod, a second pair of rods adjustably supported by said blocks,hingepieces pivotally connected with each rod, inclined wallsconstituting a hopper mounted on said hinge-pieces, and mold-wallsmounted on said hinge-pieces.

1,0. A molding device comprising movable side and end walls, handles inconnection with said end walls, and means connecting the handles and`the side walls whereby to move all of the walls in unison.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

S. A. DAwsoN, C. H. REYNOLDS.

